[Tig] LUTs compared to grading linear

[John David Hukom]

To the TIG

I just want to understand the logic behind logarithmic transfers and  
figure out how to implement a facility wide workflow working in log  
space .

I have had countless discussions about the benefit of log and somehow  
on the scanning side I am convinced. It does keep most of the colors.  
(Well if your telecine is calibrated of  course)

Assuming the telecine gives out calibrated scans in log then I am  
happy with getting log compared to getting a linear scan. I really  
get the latitude.

Here comes the hard and confusing part.

Implementing a look up table.

Are there standard look up tables that I can just use ... I would  
think like broadcast standards there are standards LUTs.

The reason for me looking for standard look up tables eventually I  
have to tell my clients categorically that what you will see is what  
most will see. I cannot tell them an arbitrary answer like " because  
we say so"

Even if we have done internal testing "if that testing is not  
standard" it will still be a long argument .

I would like to adhere to a standard LUT like 6500 is a standard.  
This is something I can implement facility wide.

The main problem is that when i turn on the default LUTs that come  
with our grading system I dont like what I see. The colors are sh at tty  
and I cannot in my best smile tell the client "thats what they should  
expect"

Currently I skip the LUT stage I scan in LOG then grade in linear  
straight away. I hope this is not a bad idea. If someone knows that I  
will end up in a dead end I really appreciate your input.

Thanks



=================
Dave Hukom
Chief Executive Officer

Mobile +(63) 917 839 6179
Tel +(63) 2 848 - POST
Email judgedave at mac.com
Fax. 893 7655

Ignite Media Inc.
"Bringing life back to film without using any."
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